Harken

Harken is a smart flashcard app that uses spaced repetition and active recall — two of the most proven memory techniques — to make remembering easy and lasting. The real magic is the Harken Chrome extension: whenever you read an article online, just click once to automatically generate multiple-choice questions based on what you just read. Add the questions you like to Harken's spaced repetition system, and the app will quiz you at the optimal time to lock in that knowledge for the long haul. Whether you're a student, a professional, or just someone who reads a lot and wants to actually retain it, Harken turns passive reading into active learning.